@Sunshine "normally you could press the power button to re-enable the WiFi". Yes, indeed. I did not know that. So ability to do it programatically would be nice, but I understand this is not...

@Sunshine Yes. I know about that, but my use case is (again) related to usb interface. When I use this router as RNDIS, and no wireless client connected , wifi is turning off after some time, and...

@Sunshine I know that it should be probably another thread, but ... could you suggest to engineers to add switch to turn on/off wifi? ;)

@Sunshine Sorry for being imprecise. By "serial" I meant USB device serial number.

There is another stupid bug: after reboot device presents ATTRS{serial}=="0123456789ABCDEF" instead of real one.

@Sunshine No. Device restarts when RNDIS interface is not up, regardless of connecting directly or via hub. Last night I left router connected via hub, and interface was up and router did not restart...